diff --git a/.travis.yml b/.travis.yml
index 7d34641..c72820d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -45,6 +45,8 @@ matrix:
     gemfile: gemfiles/Gemfile-rails.5.0.x
   - rvm: 2.1.5
     gemfile: gemfiles/Gemfile-rails.5.0.x
+  - rvm: 2.6.0
+    gemfile: gemfiles/Gemfile-rails.4.2.x
   - rvm: 1.9.3
     gemfile: Gemfile
   - rvm: 2.0.0